a day of darkness and gloom,
a day of thick clouds!
Like dawn spreading over the mountains,
a vast and mighty army!
Nothing like it has ever happened in ages past,
nor will the future hold anything like it,
even to the most distant generations.
Before it, fire devours,
behind it flame scorches.
The land before it is like the garden of Eden,
and behind it, a desolate wilderness;
...
Joel 2:2–4